In a single switched forward converter, the core reset is done by a third winding with opposite dot polarity to the primary and secondary windings. This dissipates the magnetizing inductance but how is the leakage inductance dissipated?
If it's left unaccounted for doesn't the remaining energy in the leakage inductance cause huge back EMF? If you use an RCD snubber/clamp the magnetizing energy as well as the leakage energy goes through this clamp which would cause huge power dissipation and inefficiency.
How does a high power (>100 watt) forward converter deal with this leakage inductance without going to a two switch half bridge design?